Disabling warn_unused_result warnings on a case-by-case basis

[Florian Weimer]

A long time ago, GCC decided that warn_unused_result warnings should 
*not* be silenced by casting to void, as in:

  (void) write (STDOUT_FILENO, message, strlen (message));
Apparently, programmers have figured out to use this idiom as a replacement:

  if (write (STDOUT_FILENO, message, strlen (message))) { }

I'm not sure if this is an improvement.  The (void) idiom seems to make 
the programmer intention more explicit.

Maybe it's time to reconsider and suppress the warning for casts to 
(void), too?

Thanks,
Florian